Samsung needs an alternative OS to Android as a Plan B. They cannot risk being totally reliant on Google.

if i'd have to guess, android was actually their plan B that proved as more successful than plan A while still retaining B marker. samsung would've definitely preferred os that they have a say in how it evolves. now, if you look at linux of that time, no way it could fit into mobile world.

going with custom os... too expensive

going with tizen now... completely different story. but, unlike story wants to point it out, it is not date related or "we will ship it" related. it is a waiting game where all parties simply wait for all legos to fit. systemd, wayland, kdbus are simply must have before shipping it unless plan involved gun/bullet/my foot/pain points. well, kdbus is not really necessary since there is binder already there, but it would sure be damn nice to have one ipc for all

i know that if i'd be manufacturing phones only logical step would be waiting for tizen 3.0, since it includes whole lot of necessary lego parts. as most important fact 2.x is still x11 and that is one thing you wouldn't want on phone. 3.0 is wayland and as such much more lightweight